31316225436412 has 24 divisors (see below), whose sum is σ = 62641657846656. Its totient is φ = 13419266549808.

The previous prime is 31316225436403. The next prime is 31316225436479. The reversal of 31316225436412 is 21463452261313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82011238 + ... + 82392205.

It is an arithmetic number, because the mean of its divisors is an integer number (2610069076944).

Almost surely, 2^{31316225436412} is an apocalyptic number.

It is an amenable number.

31316225436412 is an abundant number, since it is smaller than the sum of its proper divisors (31325432410244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31316225436412 is a wasteful number, since it uses less digits than its factorization.

31316225436412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164410257 (or 164410255 counting only the distinct ones).

The product of its digits is 622080, while the sum is 43.

Adding to 31316225436412 its reverse (21463452261313), we get a palindrome (52779677697725).

The spelling of 31316225436412 in words is "thirty-one trillion, three hundred sixteen billion, two hundred twenty-five million, four hundred thirty-six thousand, four hundred twelve".